JPS58193303A - Preparation of soft ferrous sintered parts - Google Patents
Preparation of soft ferrous sintered partsInfo
- Publication number
- JPS58193303A JPS58193303A JP7702282A JP7702282A JPS58193303A JP S58193303 A JPS58193303 A JP S58193303A JP 7702282 A JP7702282 A JP 7702282A JP 7702282 A JP7702282 A JP 7702282A JP S58193303 A JPS58193303 A JP S58193303A
- Authority
- JP
- Japan
- Prior art keywords
- ferrous sintered
- less
- soft ferrous
- sintered material
- subjected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
磁気特性を要する軟鉄系材料は、柔かさと同時にねばさ
を有するため、切削時にむしれを発生し難削で加工精度
を上げることが困難である。軟鉄系焼結材についても同
様で、特に薄肉材に対する精度のよい加工が困難である
。DETAILED DESCRIPTION OF THE INVENTION Soft iron-based materials that require magnetic properties are both soft and sticky, which causes peeling during cutting, making them difficult to cut and difficult to improve machining accuracy. The same applies to soft iron-based sintered materials, and it is particularly difficult to process thin-walled materials with high precision.
本発明は軟鉄系焼結材について、水蒸気中で加熱処理し
て空孔内にFe O等の酸化鉄の皮膜を形 3
成すると、被削性を悪化させず剛性を増し硬くなって切
削の際むしれにくくなるため、また外力に対し歪みにく
くなり薄肉部を有する部品等も精度よく加工できること
を見出したものである。The present invention proposes that when a soft iron-based sintered material is heat-treated in steam to form a film of iron oxide such as FeO in the pores, it increases rigidity without deteriorating machinability and becomes hard and difficult to cut. It has been discovered that parts with thin walls can be processed with high accuracy because they are less likely to peel off at the edges and are less likely to be distorted by external forces.
即ち本発明は、21%以下、co、3%以下、Ouコ%
以下の密度6.グ〜7.!;g/rsの軟鉄系焼結部品
に水蒸気中で加熱処理を行なった後、切削加工を施すも
のである。That is, the present invention provides 21% or less, co, 3% or less, Ou co%
Density below 6. G~7. ! g/rs soft iron sintered parts are subjected to heat treatment in steam and then subjected to cutting.
次に実施例について説明する。Next, an example will be described.
外径3Qvsm、内径117mm、幅コ3關の密度g
、 s g7bm3の焼結部品(組成:純鉄)を水蒸気
中で3!rOcに30分加熱処理した後、内径11gm
mに旋削加工仕上げした。寸法精度はo、oymm以下
であった。Outer diameter 3Qvsm, inner diameter 117mm, density g of 3 widths
, s g7bm3 sintered parts (composition: pure iron) in steam 3! After heat treatment at rOc for 30 minutes, the inner diameter was 11gm.
Finished by turning to m. The dimensional accuracy was less than o.oymm.
、これに対し水蒸気加熱処理を行なわずに旋削仕上げ加
工を行なったものはQ、/lnm程度以下に精度を上げ
ることはできなかった。On the other hand, when finishing turning was performed without steam heat treatment, the accuracy could not be improved to below about Q,/lnm.
本発明法によれば、VTR用マグネットケース、ステッ
プモーター用部品等を焼結材を用いて精度のよいものを
安価に提供でき乞。According to the method of the present invention, it is possible to provide magnetic cases for VTRs, parts for step motors, etc. with high precision at low cost using sintered materials.
Claims (2)
内に酸化鉄の皮膜を生成せしめた後、切削加工すること
を特徴とする軟鉄系焼結部品の製造法。(1) A method for manufacturing a soft iron sintered part, which comprises heating the soft iron sintered part in steam to form an iron oxide film in the pores, and then cutting the soft iron sintered part.
る特許請求の範囲(11項記載の軟鉄系焼結部品の製造
法。(2) The method for manufacturing a soft iron sintered part according to claim 11, wherein the soft iron sintered part has a thin wall portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7702282A JPS58193303A (en) | 1982-05-07 | 1982-05-07 | Preparation of soft ferrous sintered parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7702282A JPS58193303A (en) | 1982-05-07 | 1982-05-07 | Preparation of soft ferrous sintered parts |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58193303A true JPS58193303A (en) | 1983-11-11 |
JPS6221841B2 JPS6221841B2 (en) | 1987-05-14 |
Family
ID=13622123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7702282A Granted JPS58193303A (en) | 1982-05-07 | 1982-05-07 | Preparation of soft ferrous sintered parts |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58193303A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111435630A (en) * | 2019-01-11 | 2020-07-21 | 丰田自动车株式会社 | Method for producing soft magnetic material |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50116305A (en) * | 1974-02-26 | 1975-09-11 | ||
JPS5216681A (en) * | 1975-07-29 | 1977-02-08 | Matsushita Electric Works Ltd | Trolley wires with elongated insulators |
JPS53155507U (en) * | 1978-03-28 | 1978-12-06 | ||
JPS5651504A (en) * | 1979-09-29 | 1981-05-09 | Toshiba Corp | Production of sintered hydraulic parts |
-
1982
- 1982-05-07 JP JP7702282A patent/JPS58193303A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50116305A (en) * | 1974-02-26 | 1975-09-11 | ||
JPS5216681A (en) * | 1975-07-29 | 1977-02-08 | Matsushita Electric Works Ltd | Trolley wires with elongated insulators |
JPS53155507U (en) * | 1978-03-28 | 1978-12-06 | ||
JPS5651504A (en) * | 1979-09-29 | 1981-05-09 | Toshiba Corp | Production of sintered hydraulic parts |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111435630A (en) * | 2019-01-11 | 2020-07-21 | 丰田自动车株式会社 | Method for producing soft magnetic material |
US11313022B2 (en) | 2019-01-11 | 2022-04-26 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing soft magnetic member |
Also Published As
Publication number | Publication date |
---|---|
JPS6221841B2 (en) | 1987-05-14 |
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